Strategies for Enhancement in Food Production · Question 44

Three crops that contribute maximum to global food grain production are -

1. Wheat, maize and sorghum
2. Wheat, rice and barley
3. Wheat, rice and maize
4. Rice, maize and sorghum

Which of the following is generally used for induced mutagenesis in crop plants ?

1. UV (260 nm)
2. Alpha particles
3. Gamma rays (from cobalt-60)
4. X-rays

The name of Norman Borlaug is associated with-

1. Blue Revolution
2. Yellow Revolution
3. Green Revolution
4. White Revolution

The technique of obtaining large number of plantlets by tissue culture method is called –

1. Macropropagation
2. Organ culture
3. Plantlet culture
4. Micropropagation

India's wheat yield revolution in the 1960s was possible primarily due to :-

1. Hybrid seeds
2. Quantitative trait mutations
3. Increased chlorophyll content
4. Mutations resulting in plant height reduction

Cellular totipotency is demonstrated by :

1. All eukaryotic cells
2. Only gymnosperm cells
3. Only bacterial cells
4. All plant cells

What is the reason of formation of embryoid from pollen grain in tissue culture medium ?

1. Double fertilization
2. Test tube culture
3. Cellular totipotency
4. Organogenesis

Which of the following crops have been brought to India from New world ?

1. Mango, tea
2. Coffee
3. Tea, rubber, mango
4. Cashewnut, potato, rubber

Which statement is correct about centre of origin of plant ?

1. Climatic condition more favourable
2. More diversity in improved variety
3. None
4. Frequency of dominant gene is more

Before the European invasion, which vegetables were absent in India?

1. Simla mirch and Brinjal
2. Bitter gourd
3. Maize and chichinda
4. Potato and Tomato